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Testosterone treatment raises levels of heart plaque

A new study using coronary CT angiography reveals that testosterone treatments...Read more on AuntMinnie.comRelated Reading: Men may benefit from testosterone replacement SPECT shows testosterone's path in grumpy old men
Source: AuntMinnie.com Headlines - Category: Radiology Source Type: news

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Abstract A 58-year-old man was referred for selective internal radiation therapy for locally advanced unresectable hepatocellular carcinoma. Intra-arterial particle perfusion scintigraphy was performed with SPECT/CT following intra-arterial injection of 99mTc macroaggregated albumin. Angiography demonstrated a hepatic falciform artery, a feeding artery of the ligamentum teres, whereas scintigraphy demonstrated tracer uptake in the mid–anterior abdominal wall. The hepatic falciform artery was subsequently embolized and the repeat angiogram confirmed successful occlusion. Subsequent post–selective internal radi...
Source: Clinical Nuclear Medicine - Category: Nuclear Medicine Tags: Interesting Images Source Type: research
Conclusion: The perfusion SPECT/CT has an excellent diagnostic performance and should therefore be considered first-line imaging in the work up of PE in most cases.
Source: European Respiratory Journal - Category: Respiratory Medicine Authors: Tags: Pulmonary Circulation and Pulmonary Vascular Disease Source Type: research
ConclusionsCCTA-derived CCO decrease but not TAG predicts ischemia in SPECT MPI. The negative predictive value of CCO decrease of 85% may confer clinical implications in the diagnostic work-up of patients with a coronary stenosis.
Source: EJNMMI Research - Category: Radiology Source Type: research
If all three major coronary branches have similar degree of stenosis, the radionuclide used for perfusion study will have equal uptake in all regions of the myocardium. Thus a balanced three vessel coronary artery disease can produce a false negative myocardial perfusion scan. This situation is called balanced myocardial ischemia. In most cases this is picked up by the treadmill ECG usually done along with stress myocardial perfusion imaging. Since the ECG findings of myocardial ischemia does not depend on the relative perfusion in the coronary tree, ischemic changes will be noted in treadmill ECG even when nuclear ...
Source: Cardiophile MD - Category: Cardiology Authors: Tags: Nuclear Cardiology Source Type: blogs
Myocardial contrast echocardiography has been used in the assessment of myocardial viability. Downside of myocardial contrast echocardiography is the cost of ultrasound contrast agent (UCA). Intravenous administration of UCA improves the visualisation of myocardial segments and enables the assessment of perfusion. Myocardial segments with normal perfusion and those with patchy perfusion are considered to be viable. Those segments which have no perfusion are taken as non viable myocardial segments. UCA consists of ultrasonic microbubbles. A recent study compared myocardial contrast echocardiography with gated single photon...
Source: Cardiophile MD - Category: Cardiology Authors: Tags: General Cardiology Source Type: blogs
AbstractAim and patientsThe aim of the present study is to evaluate the additional value of systolic wall thickening to myocardial perfusion in diagnosing myocardial stunning in patients with angiography proven coronary artery disease. We selected 91 ischemic patients (82 males; mean age 59.7  ± 10.3) with CAD documented by angiography. Ischemia was defined as a summed difference score ≥5. All patients underwent a 2-day gated perfusion SPECT protocol. The patients received a dose of 740 MBq of99mTc-tetrofosmin after stress and at rest. Treadmill maximal exercise tests were performed on all patients...
Source: Journal of Nuclear Cardiology - Category: Nuclear Medicine Source Type: research
AbstractAs the second term of our commitment to Journal begins, we, the editors, would like to reflect on a few topics that have relevance today. These include prognostication and paradigm shifts; Serial testing: How to handle data? Is the change in perfusion predictive of outcome and which one? Ischemia-guided therapy: fractional flow reserve vs perfusion vs myocardial blood flow; positron emission tomography (PET) imaging using Rubidium-82 vs N-13 ammonia vs F-18 Flurpiridaz; How to differentiate microvascular disease from 3-vessel disease by PET? The imaging scene outside the United States, what are the differences and ...
Source: Journal of Nuclear Cardiology - Category: Nuclear Medicine Source Type: research
Authors: ASCI Practice Guideline Working Group, Beck KS, Kim JA, Choe YH, Hian SK, Hoe J, Hong YJ, Kim SM, Kim TH, Kim YJ, Kim YH, Kuribayashi S, Lee J, Leong L, Lim TH, Lu B, Park JH, Sakuma H, Yang DH, Yaw TS, Wan YL, Zhang Z, Zhao S, Yong HS Abstract In 2010, the Asian Society of Cardiovascular Imaging (ASCI) provided recommendations for cardiac CT and MRI, and this document reflects an update of the 2010 ASCI appropriate use criteria (AUC). In 2016, the ASCI formed a new working group for revision of AUC for noninvasive cardiac imaging. A major change that we made in this document is the rating of various nonin...
Source: Korean Journal of Radiology - Category: Radiology Tags: Korean J Radiol Source Type: research
ABSTRACT BACKGROUND AND PURPOSEAcetazolamide reactivity on 123I‐IMP SPECT is used to detect misery perfusion due to intracranial atherosclerosis. Noninvasive fractional flow assessed by signal intensity ratio (SIR) on time of flight‐magnetic resonance angiography (TOF‐MRA) might offer a feasible alternative to identify high‐risk intracranial stenosis. METHODSData from consecutive patients with unilateral middle cerebral artery (MCA) stenosis who underwent both TOF‐MRA and acetazolamide reactivity on 123I‐IMP SPECT were retrospectively analyzed. Signal intensity was measured in the background and on the MCA prox...
Source: Journal of Neuroimaging - Category: Radiology Authors: Tags: Clinical Investigative Study Source Type: research
Conclusion: Patients with normal myocardial perfusion scintigraphy in whom ST-segment depression develops during adenosine stress test appear to have no increased risk for future cardiac events compared with similar patients without ECG evidence of ischemia.
Source: Nuclear Medicine Communications - Category: Nuclear Medicine Tags: Original Articles Source Type: research
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