Doctorz Blox TM Evidence Medicine

.Evidence Medicine TM

PHONE/TABLET
smart phone (2)

zBlox.com

EvidMed.com

TABLET/COMPUTER
Full Screen Blue 70 25

Oct 28, 2011
According to the 2010 ASNC Imaging Guidelines for Nuclear Cardiology Procedures: Single photon-emission computed tomography
http://asnc.org/imageuploads/ImagingGuidelineSPECTJune2010.pdf 
(p 24-25)
 “An alternate and perhaps more rigorous approach to the assessment of the viability of any segment is the quantitative determination of ischemic-to-normal ratios.”  “Segments with ratios <___ are considered nonviable. Areas with ratios greater than ___ are considered viable, whereas areas with ratios of ______ are considered equivocal for viability.”
a) .20 ; .40 ; .20 to .40
b) .30 ; .50 ; .30 to .50
c) .40 ; .60 ; .40 to .60
d) .50 ; .80 ; .50 to .80

Oct 27, 2011
According to the 2010 ASNC Imaging Guidelines for Nuclear Cardiology Procedures: Single photon-emission computed tomography
http://asnc.org/imageuploads/ImagingGuidelineSPECTJune2010.pdf 
(p 21-23)
A 5 point  system can be used used to describe perfusion defects: normal 0 to 4 absent
(Mild=1, Moderate=2, Severe=3).
“Regional wall motion should be analyzed by the use of standard nomenclature . . . where _ is normal, _ is mild hypokinesis, _ is moderate hypokinesis,  is severe hypokinesis, _ is akinesis, and _ is dyskinesis.”
a) (normal) 1 2 3 4 5 6 (dyskinesis)
b) (normal) 4 3 2 1 0 -1 (dyskinesis)
c) (normal) 5 4 3 2 1 0 (dyskinesis)
d) (normal) 0 1 2 3 4 5 (dyskinesis)

Oct 26, 2011
According to the 2010 ASNC Imaging Guidelines for Nuclear Cardiology Procedures: Single photon-emission computed tomography
http://asnc.org/imageuploads/ImagingGuidelineSPECTJune2010.pdf 
(p 21-22)
In addition to the qualitative evaluation of perfusion defects, it is recommended that the physician also apply a semiquantitative segmental scoring system.” “In order to facilitate consistency of nomenclature with other imaging modalities, the __-segment model is preferred . . . .”  “Defect extent may be qualitatively described as small, medium, or large. In semiquantitative terms, . . . medium represents ____% . . . .
a) 17 ; 5-10
b) 17 ; 10-20
c) 20 ; 10-20
d) 20 ; 20-30


Oct 25, 2011
According to the 2010 ASNC Imaging Guidelines for Nuclear Cardiology Procedures: Single photon-emission computed tomography
http://asnc.org/imageuploads/ImagingGuidelineSPECTJune2010.pdf 
(p 21)
“There are no established quantitative criteria for RV uptake, but in general, the intensity of the RV is approximately ____ of peak LV intensity. RV uptake increases in the presence of RV hypertrophy, . . . The intensity of the RV may also appear relatively increased when  ________________”
a) 50% ; LV uptake is globally increased
b) 50% ; LV uptake is globally reduced
c) 50% ; LV function is globally reduced
d) 90% ; RV function is globally increased

Oct 24, 2011
According to the 2010 ASNC Imaging Guidelines for Nuclear Cardiology Procedures: Single photon-emission computed tomography
http://asnc.org/imageuploads/ImagingGuidelineSPECTJune2010.pdf 
(p 21)
“The presence of ________ after _____ perfusion imaging has been described as an indicator of poor prognosis and should therefore be evaluated in all patients  . . .  No clear consensus has emerged as to the significance of lung uptake with _____ perfusion agents, although . . . may provide a clue to the presence of resting LV systolic dysfunction . . . ”
a) decreased lung uptake ; technetium-based; thallium
b) decreased lung uptake ; thallium ;
technetium-based
c) increased lung uptake ; technetium-based ; thallium
d) increased lung uptake ; thallium ;
technetium-based

Oct 21, 2011
According to the 2009 ASNC Imaging Guidelines for Nuclear Cardiology Procedures: Stress Protocols and Tracers,
http://www.asnc.org/imageuploads/ImagingGuidelinesStressProtocols021109.pdf
(p 8)
Though slightly longer delays are recommended for Tc-99m sestamibi, 
“For Tc-99m tetrofosmin, minimum delays of ___ minutes for exercise,
___ minutes for rest, and
___ minutes for pharmacologic stress are optimal. Since there is minimal redistribution with these agents, longer delays, up to
___ hours, between the radiotracer injection and imaging can be used when needed.”
a) 10-15 ; 30-45 ; 45 ; 2
b) 10-15 ; 30-45 ; 45 ; 6
c) 15-30 ; 45-60 ; 90 ; 2
d) 15-30 ; 45-60 ; 90 ; 12

Oct 20, 2011
According to the 2009 ASNC Imaging Guidelines for Nuclear Cardiology Procedures: Stress Protocols and Tracers,
http://www.asnc.org/imageuploads/ImagingGuidelinesStressProtocols021109.pdf
(p 8)
“Tc-99m sestamibi and Tc-99m tetrofosmin have very similar characteristics: . . . physical half-life of ______, produces _____ photons, first-pass extraction ____ than Tl-201, uptake and mitochondrial retention dependent on blood flow . . . Their myocardial washout (redistribution) is clinically negligible. . . excreted via the ______ system . . . ”
a) 6 hours ; 68-80 keV ; more ; renal
b) 6 hours ; 140 keV ; less ; hepatobiliary
c) 73.1 hours ; 68-80 keV ; less ; renal
d) 73.1 hours ; 140 keV ;more ; hepatobiliary