MyMedR

Fulltext One year survivor of metastatic renal cell carcinoma treated with pazopanib

Inn FX, Ahmed N, Hing EY, Jasman MH

Urol Ann, 2017 5 10;9(2):194-196.

PMID: 28479777 DOI: 10.4103/0974-7796.204178

Tyrosine kinase inhibitor (TKI) and its side effects are well known. However, these are mainly descriptive, with pictorial data lacking. Here, in we report a case of metastatic renal cell carcinoma, treated with TKI, with classic side effects; supplemented with images that demonstrate the adverse effects of the drug. In addition, we discuss and demonstrate the computed tomography changes.

Matched MeSH terms: Tomography, X-Ray Computed

Fulltext A case of missed giant bullae emphysema diagnosed as pneumothorax

Ong, S.F., Nik Azlan, N.M.

Medicine & Health, 2017;12(1):90-93.

MyJurnal

We report a case of a giant bullous emphysema misdiagnosed as a pneumothorax. A 18-year-old chronic smoker presented with right sided chest pain and dyspnoea. Initial respiratory rate was 35 /min, blood pressure was 136/90 mmHg, heart rate 80/min and SpO2 was 98% on room air. Clinical examination revealed reduced right air entry and left trachea deviation. Chest X-ray helped to arrive at a diagnosis of pneumothorax. Needle aspiration was then performed followed by a chest tube thoracostomy because of no improvement. Massive amount of blood was drained and patient deteriorated further. CT thorax revealed a right haemopneumothorax with multiple bullaes. Patient was rushed to OT for emergency thoracotomy for stapling of the ruptured bullae. Giant bullous emphysema can mimic pneumothorax and physician must be vigilant if draining a suspected pneumothorax.
Keywords: emphysema, haemopneumothorax, thoracostomy, thorax

Matched MeSH terms: Tomography, X-Ray Computed

Fulltext Undiagnosed traumatic diaphragmatic hernia in two cats

Lau , S.F.

Jurnal Veterinar Malaysia, 2016;28(1):12-15.

MyJurnal

Two cases of diaphragmatic hernia in cats caused by road traffic accident were undiagnosed during the initial presentation. Both cats showed no evidence of respiratory distress and clinicians did not notice the diaphragmatic hernia on thoracic radiographs. Later on, both cats showed signs of dyspnea and diaphragmatic hernia was diagnosed with repeated thoracic radiograph and ultrasound. Diaphragmatic hernia is rather common in veterinary practice, however, its diagnosis can be clinically challenging. This case report highlights the importance to re-evaluate and monitor the patient closely after the traffic accident. Repeated radiograph, different diagnostic modalities and techniques such as ultrasound, computed tomography and positive contrast peritoneagraphy should be used in order to diagnose the diaphragmatic hernia conclusively.

Matched MeSH terms: Tomography, X-Ray Computed

Fulltext Schizencephaly: psychosis, a rare manifestation

Aloysius, A., Seed, H.F., Thong, K.S.

Malaysian Journal of Psychiatry, 2017;26(2):0-0.

MyJurnal

Schizencephaly is an uncommon congenital malformation of the central
nervous system which affects the development of the cerebral cortex. It is
defined as the gray matter lined filled cleft with cerebrospinal fluid that
extends from the pial surface to the ventricle. There exists a paucity in
scientific literature regarding the association between schizencephaly and
psychosis. We report a case of a 36-year-old male, presented with worsening
crisis of aggression, disorganized behavior and auditory hallucinations over
20 years. CT brain scan revealed unilateral left open lip schizencephaly, a
finding during his recent admission to the psychiatry ward.

Matched MeSH terms: Tomography, X-Ray Computed

Occult primary spontaneous pneumothorax

Tai, Yong-Ting, Tong, Chin-Voon

International e-Journal of Science, Medicine & Education, 2017;11(2):30-33.

MyJurnal

We report a case of occult primary spontaneous
pneumothorax in a 30 years-old woman. She
developed symptoms and signs that were suggestive of
pneumothorax. However, chest radiograph failed to
reveal pneumothorax. Therefore, we proceeded with
computed tomography (CT) thorax which revealed
significantly moderate right pneumothorax. The
diagnostic approach and the management of this case
are discussed.

Matched MeSH terms: Tomography, X-Ray Computed

CT examination effective doses in Saudi Arabia

Sulieman A, Mahmoud MZ, Serhan O, Alonazi B, Alkhorayef M, Alzimami K, et al.

Appl Radiat Isot, 2018 Nov;141:261-265.

PMID: 30054177 DOI: 10.1016/j.apradiso.2018.07.011

Patient effective doses and the associated radiation risks arising from particular computed tomography (CT) imaging procedures are assessed. The objectives of this research are to measure radiation doses for patients and to quantify the radiogenic risks from CT brain and chest procedures. Patient data were collected from five calibrated CT modality machines in Saudi Arabia. The results are from a study of a total of 60 patients examined during CT procedures using the calibrated CT units. For CT brain and chest, the mean patient effective doses were 1.9 mSv (with a range of 0.6-2.5 mSv) and 7.4 mSv (with a range of 0.5-34.8 mSv) respectively. The radiogenic risk to patients ranged from between 10-5 and 10-4 per procedure. With 65% of the CT procedure cases diagnosed as normal, this prompts re-evaluation of the referral criteria. The establishment of diagnostic reference levels (DRL) and implementation of radiation dose optimisation measures would further help reduce doses to optimal values.

Matched MeSH terms: Tomography, X-Ray Computed

Fulltext A case of missed thoracic fracture masquerading as intra-abdominal injury

Amin,O., Nik Azlan, N.M., Afliza, A.B.

Medicine & Health, 2017;12(1):127-130.

MyJurnal

Altered mental status in the setting of polytrauma poses a challenge to the emergency team managing the patient. The tendency to miss positive findings in these circumstances increases several folds due to multiple factors such as depressed mental status/intoxication, presence of distracting injuries and concurrent life-threatening injuries that require more urgent attention. In view of this, NEXUS (National Emergency X-Radiography Utilization Study) criteria of clearing the cervical spine was adopted and used worldwide. Consensus on clearance of the other parts of spine is still lacking. This case reports highlights the findings in a 18-yrs-old male who presented with altered mental status, facial pain and abrasion, following a motor vehicle accident. Facial bone fracture was diagnosed and he was discharged. Three days later, he came with severe epigastric pain. Tenderness on palpation was noted at the spine and Computed Tomography (CT) scan was done. Multiple thoracic vertebra fractures were seen. As a conclusion, thorough primary and secondary survey should be done in patients who have regained full consciousness prior to discharge in order to avoid overlooking other serious injuries.
Keywords: altered, CT scan, fracture, mental status, thoracic vertebra

Matched MeSH terms: Tomography, X-Ray Computed

Automatic liver tumor segmentation on computed tomography for patient treatment planning and monitoring

Moghbel M, Mashohor S, Mahmud R, Saripan MI

EXCLI J, 2016;15:406-23.

PMID: 27540353 DOI: 10.17179/excli2016-402

Segmentation of liver tumors from Computed Tomography (CT) and tumor burden analysis play an important role in the choice of therapeutic strategies for liver diseases and treatment monitoring. In this paper, a new segmentation method for liver tumors from contrast-enhanced CT imaging is proposed. As manual segmentation of tumors for liver treatment planning is both labor intensive and time-consuming, a highly accurate automatic tumor segmentation is desired. The proposed framework is fully automatic requiring no user interaction. The proposed segmentation evaluated on real-world clinical data from patients is based on a hybrid method integrating cuckoo optimization and fuzzy c-means algorithm with random walkers algorithm. The accuracy of the proposed method was validated using a clinical liver dataset containing one of the highest numbers of tumors utilized for liver tumor segmentation containing 127 tumors in total with further validation of the results by a consultant radiologist. The proposed method was able to achieve one of the highest accuracies reported in the literature for liver tumor segmentation compared to other segmentation methods with a mean overlap error of 22.78 % and dice similarity coefficient of 0.75 in 3Dircadb dataset and a mean overlap error of 15.61 % and dice similarity coefficient of 0.81 in MIDAS dataset. The proposed method was able to outperform most other tumor segmentation methods reported in the literature while representing an overlap error improvement of 6 % compared to one of the best performing automatic methods in the literature. The proposed framework was able to provide consistently accurate results considering the number of tumors and the variations in tumor contrast enhancements and tumor appearances while the tumor burden was estimated with a mean error of 0.84 % in 3Dircadb dataset.

Matched MeSH terms: Tomography, X-Ray Computed

Intrapancreatic accessory spleen: An eluding diagnosis

Teoh KH, Balraj S, Navarasi SR

Med J Malaysia, 2017 02;72(1):68-70.

PMID: 28255147 MyJurnal

Intrapancreatic accessory spleen (IPAS) is a benign anomaly of splenic embryology and a rare cause of pancreatic pseudotumour. Here, we report a case of a 70-year-old Malay lady whose IPAS was discovered incidentally during her surveillance computed tomography for her underlying left lower lung fibrosis. Radiologically, the lesion mimicked a neuroendocrine pancreatic tumour and was only diagnosed pathologically as IPAS after surgery. In conclusion, recognising IPAS as a differential for enhancing pancreatic mass allows us to exhaust all non-invasive diagnostic means to diagnose this benign lesion. It will allow the patient to avoid unnecessary surgery and its accompanying complications.

Matched MeSH terms: Tomography, X-Ray Computed

Use of a Diagnostic Score to Prioritize Computed Tomographic (CT) Imaging for Patients Suspected of Ischemic Stroke Who May Benefit from Thrombolytic Therapy

Hwong WY, Bots ML, Selvarajah S, Kappelle LJ, Abdul Aziz Z, Sidek NN, et al.

PLoS One, 2016;11(10):e0165330.

PMID: 27768752 DOI: 10.1371/journal.pone.0165330

A shortage of computed tomographic (CT) machines in low and middle income countries often results in delayed CT imaging for patients suspected of a stroke. Yet, time constraint is one of the most important aspects for patients with an ischemic stroke to benefit from thrombolytic therapy. We set out to assess whether application of the Siriraj Stroke Score is able to assist physicians in prioritizing patients with a high probability of having an ischemic stroke for urgent CT imaging.

Matched MeSH terms: Tomography, X-Ray Computed

An Optical Tomography System Using a Digital Signal Processor

Rahim RA, Thiam CK, Rahiman MH

Sensors (Basel), 2008 Mar 27;8(4):2082-2103.

PMID: 27879811

The use of a personal computer together with a Data Acquisition System (DAQ) as the processing tool in optical tomography systems has been the norm ever since the beginning of process tomography. However, advancements in silicon fabrication technology allow nowadays the fabrication of powerful Digital Signal Processors (DSP) at a reasonable cost. This allows this technology to be used in an optical tomography system since data acquisition and processing can be performed within the DSP. Thus, the dependency on a personal computer and a DAQ to sample and process the external signals can be reduced or even eliminated. The DSP system was customized to control the data acquisition process of 16x16 optical sensor array, arranged in parallel beam projection. The data collected was used to reconstruct the cross sectional image of the pipeline conveyor. For image display purposes, the reconstructed image was sent to a personal computer via serial communication. This allows the use of a laptop to display the tomogram image besides performing any other offline analysis.

Matched MeSH terms: Tomography, X-Ray Computed

Fulltext Acanthamoeba encephalitis in an immunocompetent child and review of the imaging features of intracranial acanthamoebic infections in immunocompetent patients

Mohammad Hanafiah, Mohd Farhan Hamdan, Azura Mohamed Mukhari Shahizon, Wong, Sau Wei, Yoganathan Kanaheswari

Neurology Asia, 2018;23(2):179-184.

MyJurnal

Granulomatous amoebic encephalitis caused by Acanthamoeba is a rare entity mainly affecting
immunocompromised patients. We reported a case of Acanthamoeba encephalitis of a 1-year-old
immunocompetent child and described the CT and MRI findings of the brain, while reviewing the
relevant literatures. The imaging findings of Acanthamoeba meningoencepalitis in immunocompetent
patients are non-specific and pose a diagnostic challenge.

Matched MeSH terms: Tomography, X-Ray Computed

Fulltext Retinoblastoma in an older child: a case report

Ong, Wu Zhuan, Jamalia Rahmat, Ramasamy, Sunder, Amir Samsudin

Malaysian Journal of Medicine and Health Sciences, 2018;14(2):93-96.

MyJurnal

Retinoblastoma is a rare intraocular malignant tumour more commonly seen in children below five years of age. We presented a rare case of retinoblastoma in an older child. A nine-year-old girl noticed that she had loss of vision OS following a fall at home. Her vision was 6/6 OD and only light perception OS. Examination of the left eye revealed an extensive exudative retinal detachment. Her right eye examination was unremarkable. CT scan showed a left eye intraocular mass with calcification. EUA revealed a mixed endophytic and exophytic mass with extensive exudative retinal detachment. Family members consented to left eye enucleation and histopathological report confirmed the diagnosis of retinoblastoma. Post enucleation, patient is doing well with a prosthetic eye. In conclusion, any unexplained visual loss in children regardless of age warrants a full ophthalmological examination as the possibility of retinoblastoma cannot be ruled out.

Matched MeSH terms: Tomography, X-Ray Computed

Fulltext Spontaneous resolution of asymptomatic hepatic pseudoaneurysm post radiofrequency ablation

Ch'ng LS, Tazuddin EEM, Young B, Ali AFM

BJR Case Rep, 2016;2(2):20150306.

PMID: 30363592 DOI: 10.1259/bjrcr.20150306

Radiofrequency ablation (RFA) of a hepatic tumour is an established treatment option with an acceptable complication rate. Formation of a pseudoaneurysm after RFA of liver metastasis is an uncommon complication. We report the case of a 69-year-old female patient developing a hepatic pseudoaneurysm after RFA of liver metastasis. On a follow-up CT scan 6 weeks later, there was spontaneous resolution of the pseudoaneurysm. Hepatic pseudoaneurysms are usually treated owing to the risk of rupture. Invasive procedures or conservative management of an asymptomatic hepatic pseudoaneurysm is still the subject of debate. The spontaneous resolution of a hepatic pseudoaneurysm in our patient suggests that an asymptomatic pseudoaneurysm maybe observed for resolution instead of being treated at presentation.

Matched MeSH terms: Tomography, X-Ray Computed

Fulltext Hydrocephaly Analysis Supported by Computerized Tomography and Nuclear Magnetic Resonance

Zhang T, Zhou Y, Su G, Shi D, Gopinath SCB, Lakshmipriya T, et al.

J Anal Methods Chem, 2019;2019:5872347.

PMID: 31662948 DOI: 10.1155/2019/5872347

Hydrocephalus is widely known as "hydrocephaly" or "water in the brain," a building up of abnormal cerebrospinal fluid in the brain ventricles. Due to this abnormality, the size of the head becomes larger and increases the pressure in the skull. This pressure compresses the brain and causes damage to the brain. Identification by imaging techniques on the hydrocephalus is mandatory to treat the disease. Various methods and equipment have been used to image the hydrocephalus. Among them, computerized tomography (CT) scan and nuclear magnetic resonance (NMR) are the most considered methods and gives accurate result of imaging. Apart from imaging, cerebrospinal fluid-based biomarkers are also used to identify the condition of hydrocephalus. This review is discussed on "hydrocephalus" and its imaging captured by CT scan and NMR to support the biomarker analysis.

Matched MeSH terms: Tomography, X-Ray Computed

Dimensional and structural stability of gamma irradiated stacked die quad flat no leads (QFN)

Siew PF, Wan Yusmawati Wan Yusoff, Azman Jalar

Sains Malaysiana, 2014;43:827-832.

The physical properties and structural stability of the Quad Flat No-Leads (QFN) package with different gamma radiation doses have been investigated. The packages were irradiated with Co-60 gamma radiation with varying doses of 5 Gy, 50 Gy, 500 Gy, 5 kGy and 50 kGy with operating dose of 2.54 kGylh at room temperature. The infinite focus microscope (IFM) was used to measure the dimensional change and slantinglwarpage behaviour, while the 3D CT Scan X-ray machine was used to determine the occurrence of deflection on a wire in package due to exposure. It is believed that radiation effect on ceramic filler in the epoxy mold compound (EMC) plays an important role to induce the defects and resulted in swelling of the package. The slantinglwarpage behaviour is believed to be caused by the swelling behaviour of ceramic filler and further induced structural stability. The induced stress on the EMC structural after the dimensional change and slantinglwarpage failure leads to the occurrence of wire sweep. The finding suggests that defect production in swelled ceramic filler leads to the occurrence of dimensional and structure instability.

Matched MeSH terms: Tomography, X-Ray Computed

Fulltext Fine needle aspiration of lung lesion: Lateral and transpectoral approach

Smith K

Biomed Imaging Interv J, 2012 Jan;8(1):e2.

PMID: 22970058 DOI: 10.2349/biij.8.1.e2

A 69 year-old man presented with an incidental finding on radiograph of a lesion in the left upper lobe. CT indicated it was likely to be a neoplasm and CT-guided FNA was requested. The lesion was located medial to the scapula so a creative approach was utilised to gain access to the lesion. This study discusses the approach used and why it reduced patient risk compared to a more conventional procedure. The sample was positive for neoplasm and there were no complications arising from the procedure.

Matched MeSH terms: Tomography, X-Ray Computed

Correlation between Hounsfield unit derived from head, thorax, abdomen, spine and pelvis CT and t-scores from DXA

Amin MFM, Zakaria WMW, Yahya N

Skeletal Radiol, 2021 Dec;50(12):2525-2535.

PMID: 34021364 DOI: 10.1007/s00256-021-03801-z

OBJECTIVES: CT examination can potentially be utilised for early detection of bone density changes with no additional procedure and radiation dose. We hypothesise that the Hounsfield unit (HU) measured from CT images is correlated to the t-scores derived from dual energy X-ray absorptiometry (DXA) in multiple anatomic regions.

MATERIALS & METHODS: Data were obtained retrospectively from all patients who underwent both CT examinations - brain (frontal bone), thorax (T7), abdomen (L3), spine (T7 & L3) or pelvis (left hip) - and DXA between 2014 and 2018 in our centre. To ensure comparability, the period between CT and DXA studies must not exceed one year. Correlations between HU values and t-scores were calculated using Pearson's correlation. Receiver operating characteristic (ROC) curves were generated, and the area under the curve (AUC) was used to determine threshold HU values for predicting osteoporosis.

RESULTS: The inclusion criteria were met by 1043 CT examinations (136 head, 537 thorax, 159 lumbar and 151 left hip). The left hip consistently provided the most robust correlations (r = 0.664-0.708, p 0.05.

CONCLUSION: HU values derived from the hip, T7 and L3 provided a good to moderate correlation to t-scores with a good prediction for osteoporosis. The suggested optimal thresholds may be used in clinical settings after external validations are performed.

Matched MeSH terms: Tomography, X-Ray Computed

Customised weight-based volume contrast media protocol in CT of chest, abdomen and pelvis examination

Yap LPP, Wong JHD, Muhammad Gowdh NF, Ng WL, Chung E, Eturajulu RC, et al.

J Med Imaging Radiat Sci, 2021 06;52(2):257-264.

PMID: 33531272 DOI: 10.1016/j.jmir.2021.01.003

INTRODUCTION: Fixed volume (FV) contrast media administration during CT examination is the standard practice in most healthcare institutions. We aim to validate a customised weight-based volume (WBV) method and compare it to the conventional FV methods, introduced in a regional setting.

METHODS: 220 patients underwent CT of the chest, abdomen and pelvis (CAP) using a standard FV protocol, and subsequently, a customised 1.0 mL/kg WBV protocol within one year. Both image sets were assessed for contrast enhancement using CT attenuation at selected regions-of-interest (ROIs). The visual image quality was evaluated by three radiologists using a 4-point Likert scale. Quantitative CT attenuation was correlated with the visual quality assessment to determine the HU's enhancement indicative of the image quality grades. Contrast media usage was calculated to estimate cost-savings from both protocols.

RESULTS: Mean patient age was 61 ± 14 years, and weight was 56.1 ± 8.7 kg. FV protocol produced higher contrast enhancement than WBV, p

Matched MeSH terms: Tomography, X-Ray Computed

Fulltext Plunging Ranula

Liman ARUA, Tuang GJ, Mansor M

Ear Nose Throat J, 2021 Dec;100(10_suppl):1004S-1005S.

PMID: 32525702 DOI: 10.1177/0145561320927828

Matched MeSH terms: Tomography, X-Ray Computed

Displaying publications 201 - 220 of 1053 in total