Tuesday, September 30, 2014

Radiology Trivia

Interesting trivia: Roengten chose his wife for 1st Xray, why didn't Hounsefield chose his wife for 1st CT?----------------------
He never married....


Brain abscess by Cladophialophora Bantiana in immunocompetent

Cladophialophora bantiana is a soil-based neurotropic fungus, which has been implicated as a leading cause of cerebral phaeohyphomycosis because of its affinity to glial tissue. Pathogenicity is due to melanin which can scavange free radicals produced by phagocytic cells. Although the portal of entry is not clearly established, most probably it is through respiratory tract. Inhalation of spores followed by haematogenous dissemination to brain is the likely possibility. Other sources can be from paranasal sinus or direct inoculation in brain. 

Cladophialophora brain abscess was earlier common especially in immunocompromised patients and those receiving organ transplant,  however,  but as per the recent series, it is on the rise even in immunocompetent hosts.  


Sunday, September 28, 2014

Vision, Common Sense and Criticism

There are three kind of people :

Category 1 : confused, they cannot see the obvious, they cannot see what is in front of them, they analyse everything with prejudices and bias they have accumulated in life.

Category 2: common sense, they are able to see things like they are. They see and understand without prejudices.

Category 3 : vision, they see what other don't see. They are able crystal ball the future. They see gold where others see dust.

&

People with "vision" create, people with "common sense" execute and people with "confusions" criticize.

Thursday, September 25, 2014

Ga68-DOTANOC PET

Imaging of neuroendocrine tumors (NETs) relies on conventional morphological methods and on somatostatin receptor scintigraphy (SRS). SRS is effective for carcinoid tumors, and for most pancreatic islet-cell tumors, but may fail to detect some tumors. Furthermore, this technique may require repeated imaging over 24-48 hours. 

Introduction of newer somatostatin analogs such as DOTANOC improves lesion detection. In addition, labeling with Ga68 and use of PET/CT improves the pharmacokinetics of the tracer resulting in better tumor visualization, and an easier procedure with imaging over only 1-2 hours.



AJR raises questions on Radiation Cataracts

According to the authors G.Donald Frey,  for many years radiation-induced cataracts were considered unlikely by most radiologists. Recent data suggest that the likelihood is much higher than previously thought, and the International Commission on Radiological Protection has suggested lower exposure limits.

Citation: American Journal of Roentgenology. 2014;203: W345-W346.

Read More: http://www.ajronline.org/doi/abs/10.2214/AJR.13.11242


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