Related to radiology in general and Indian radiology in particular

2005/03/31

Computed tomographic colonography without cathartic preparation performed well in detecting colorectal polyps

This article by Iannaccone R et al in Gastroenterology has been dissected in "Evidence-Based Medicine", with pretty favourable results for CT colonography using fecal taggging.

Frankly, its just a matter of time, before this becomes a routine procedure and in many places anyway it has become so.

2005/03/29

"Cutting-edge" MRI scan - diffusion weighted MRI in brain tumors undergoing radiation therapy

Hype is everywhere. Note the "cutting-edge magnetic resonance imaging (MRI) scan" that is discussed in this article on the use of diffusion-weighted MRI for monitoring response of brain tumors to radiation therapy. This article merits a lay press mention? And its been carried by at least 5 prominent papers in the US. Let's wait and see when the Times of India carries it.

2005/03/28

Scan Man on GE's Triple Rule Out

Scan Man is brilliant again as ever. In this piece, he talks about GE's direct to consumer marketing of the "Triple Rule Out" and its association with the VCT. Philips, Siemens and Toshiba may arguably have better scanners, but they really need to learn marketing from GE.

Radiography students ace cranial CT training

Diagnostic Imaging has this report on radiographers in the UK doing very well reporting cranial CTs after training. Though it is supposed to be a way of reducing work-loads for radiologists, it is one more nail in the coffin that the administration and establishment are preparing for our demise.

If more and more non-doctors can be trained in specific niche areas of reporting and performing procedures, we could be made irrelevant.

2005/03/27

Is there a need for contrast-enhanced T1-weighted MRI of the spine after inconspicuous short tau inversion recovery imaging?

This is another interesting article on the importance and utility of the STIR sequence. As we already know in the pelvis, where a negative STIR sequence is unlikely to show disease on other sequences, this is another article in European Radiology that shows that in the presence of a normal STIR sequence, when looking for vertebral metastases, a contrast enhanced study will not show additional information.

Having said that, in patients with sclerotic metastases, it is important to understand that a plain T1W sequence must supplement the STIR sequence, which may sometimes be normal.

BBC NEWS | Americas | Appeal court rejects Schiavo plea

Only in the US. This entire drama about Terry Schiavo seems so strange and in the end seems nothing but a fight between the husband and the parents, turning political in a national arena.

Some radiology stuff has also been dragged in at times, in terms of getting CT scans and MRIs done to look at her brain.

Assessment of the radial artery and hand circulation by computed tomography angiography: a pilot study.

This is a pilot study, reported in Heart Surg Forum, on using CT angiography for the assessment of the radial artery prior to bypass graft surgery using this vessel. Currently color Doppler is used for these patients, but CTA should be able to give superior information, especially about the anatomy and calcification.

BBC NEWS | Health | Scanner 'temperature check' hope

It is amazing what can find its way into the lay press. One such article in the BBC News UK Edition talks about how reseachers are finding ways of measuring the body tempoerature accurately within MRI scanners, just in case a particular part of the body gets too hot.

The best part of the article however is a quote from one radiologist saying that they talk to their patients in the scanner regularly to check how they are doing.

Seven Leadership Fallacies and How to Correct Them -- Gunderman 184 (4): 1065 -- American Journal of Roentgenology

Richard Gunderman, in the April issue of the AJR, discusses seven common fallacies that radiologists have towards the issue of leadership - he states that many capable physicians refuse to be leaders because they believe in these fallacies. The fallacies he discusses are ; irrelevance, disqualification, tyranny, technique, vanity, ease and sacrifice.

It is an article worth reading.

Hypothesis on the Evolution of Cavitary Lesions in Nontuberculous Mycobacterial Pulmonary Infection: Thin-Section CT and Histopathologic Correlation

This article from Korea is another elegant article defining another aspect of tuberculosis. The authors, in the April issue of the AJR, show how the cavitary lesions in M. avium intracellulare may actually be due to peribronchial nodules forming bronchiectatic lesions, that eventually become cavities. They have predominantly used the "feeding bronchus" sign to make this hypothesis.

Most advances in radiology knowledge in tuberculosis seem to be coming out of South Korea, starting with the landmark paper in the 90s, by Im JG et al, on the "tree-in-bud" appearance. Sadly, though we, as Indians, probably see more tuberculosis, we are as "backward" as ever.

Decreased intermediate term patency of automated proximal anastomoses evaluated by sequential ultrafast CT

You know that a modality is coming of age, when it is used to differentiate different clinical issues. In this study by Dietrich M et al in the European Journal of Cardiothoracic Surgery, ultra-fast CT was used to look for early restenosis in two different groups of patients going in for saphenous vein graft bypass surgery, one group having regular handsewn anastomosis and the other group having a new automatic clamper with a nitinol implant. More and more now we can use MRI and CT being used as gold standards or methods for assessing and answering clinical issues...this is a "coming of age phenomenon"

MDCT of Abdominal Wall Hernias: Is There a Role for Valsalva's Maneuver?

This is an interesting article in the March issue of the AJR, where the Valsalva maneuvre was used to assess abdominal wall hernias. The interesting thing is that in 10 patients, the hernia could only be detected by the Valsalva maneuvre. We don't often get patients referred only for evaluation of hernias, but in specific instances where the physician or surgeon suspects a hernia, especially in obese individuals and imaging is requested, this technique could be used. However, MRI is also very good for looking at hernias, though I am not sure whether any study has compared CT and MRI for abdominal wall hernias.

CT urography using 64-slice CT

This report from auntminnie.com profiles the use of Radiology, CT">64-slice CT using a biphasic injection technique with VRT reconstructions. It is likely now that conventional urography will go the way of the OCG, except in situations where cost is an issue. It will take another few years though for the appropriate techniques to be standardized for them to worm their way into regular practice.

As hypes go - 64-slice CT promotions

The hype and "buzz" being created by the new 64 slice CTs is amazing. Check out this new item about Channelnewsasia.com">"the fastest CT scanner in Asia".

With mobile phones, it was "mine is smaller than yours". With CT scans, it is "mine is faster than yours".