EVALUATION OF AN ALTERNATIVE METHOD FOR TESTING INTRINSIC UNIFORMITY BY USING A LOW ACTIVITY CO-57 FLOOD SOURCE RATHER THAN A TECHNETIUM-99M POINT SOURCE AT 5 UFOV

1995 ◽  
Vol 20 (7) ◽  
pp. 658
Author(s):  
C Child ◽  
S Magaris ◽  
J Vilani
Keyword(s):  
Point Source ◽  
Technetium 99M ◽  
Alternative Method ◽  
Low Activity ◽  
Flood Source

scholarly journals Measurement of Uniformity and Multiple Head Registration (MHR)/Centre of Rotation (COR) of a Newly Installed Hybrid SPECT/CT At INMAS, Mymensingh

2015 ◽  
Vol 17 (1) ◽  
pp. 67-74
Author(s):  
Md Fakhar Uddin ◽  
SM Moinul Islam ◽  
M Nasim Khan ◽  
Ratan Kumar Chakraborty ◽  
Shakila Zaman Rima ◽  
...  
Keyword(s):  
Quality Assurance ◽  
Point Source ◽  
Uniform Distribution ◽  
Quality Controls ◽  
Equal Strength ◽  
Detector Surface ◽  
Baseline Values ◽  
Centre Of Rotation ◽  
Flood Source ◽  
Spect Images

The main quality controls of hybrid SPECT/CT are Uniformity and Multiple Head Registration (MHR)/Centre of rotation (COR). Uniformity corrects and verifies camera’s response to uniform distribution of radionuclides on the detector surface. MHR/COR not only observes mechanical errors but also quantitatively corrects the errors due to movement of patients and detectors onthe SPECT images. The aim of the study is to establish baseline values thatcan be used as reference for future quality assurance and to verify the manufacturer’s specification. Both intrinsic and extrinsic Uniformity were measured by using 18?Ci 99mTc point source and 35mCi 99mTc flood source respectively. For MHR/COR measurements, MHR Phantom containing five approximately equal strength (1 mCi99mTc of each) point sourceswere used. The values were found to be in correlation with manufacturer’s specification. DOI: http://dx.doi.org/10.3329/bjnm.v17i1.22494 Bangladesh J. Nuclear Med. 17(1): 67-74, January 2014

AN ALTERNATIVE METHOD FOR THE PREPARATION OF TECHNETIUM 99m RADIOPHARMACEUTICALS FROM FREEZE-DRIED KITS

1981 ◽  
Vol 2 (3) ◽  
pp. 147-154 ◽  
Author(s):  
A. M. Millar ◽  
J. J. K. Best ◽  
M. V. Merrick ◽  
A. L. Muir
Keyword(s):  
Technetium 99M ◽  
Alternative Method ◽  
Freeze Dried

Precise measurement of intradermal fluid delivery using a low activity technetium-99m pertechnetate tracer

Vaccine ◽  
2019 ◽  
Vol 37 (51) ◽  
pp. 7463-7469
Author(s):  
Sahan A. Ranamukhaarachchi ◽  
Tullio V. Esposito ◽  
Mehrsa Raeiszadeh ◽  
Urs O. Häfeli ◽  
Boris Stoeber
Keyword(s):  
Precise Measurement ◽  
Technetium 99M ◽  
Fluid Delivery ◽  
Low Activity

AN ALTERNATIVE METHOD FOR THE PREPARATION OF TECHNETIUM 99m RADIOPHARMACEUTICALS FROM FREEZE-DRIED KITS

1981 ◽  
Vol 2 (3) ◽  
pp. 147-154 ◽  
Author(s):  
A. M. Millar ◽  
J. J. K. Best ◽  
M. V. Merrick ◽  
A. L. Muir
Keyword(s):  
Technetium 99M ◽  
Alternative Method ◽  
Freeze Dried

XRMF applications of a monolithic, polycapillary, focusing x-ray optic

1996 ◽  
Vol 54 ◽  
pp. 240-241
Author(s):  
D. A. Carpenter ◽  
Ning Gao ◽  
G. J. Havrilla
Keyword(s):  
Trace Elements ◽  
Point Source ◽  
Focal Spot ◽  
Fluorescence Analysis ◽  
X Rays ◽  
Focal Distance ◽  
Spot Diameter ◽  
X Ray ◽  
Focal Spot Diameter

A monolithic, polycapillary, x-ray optic was adapted to a laboratory-based x-ray microprobe to evaluate the potential of the optic for x-ray micro fluorescence analysis. The polycapillary was capable of collecting x-rays over a 6 degree angle from a point source and focusing them to a spot approximately 40 µm diameter. The high intensities expected from this capillary should be useful for determining and mapping minor to trace elements in materials. Fig. 1 shows a sketch of the capillary with important dimensions.The microprobe had previously been used with straight and with tapered monocapillaries. Alignment of the monocapillaries with the focal spot was accomplished by electromagnetically scanning the focal spot over the beveled anode. With the polycapillary it was also necessary to manually adjust the distance between the focal spot and the polycapillary.The focal distance and focal spot diameter of the polycapillary were determined from a series of edge scans.

Technetium 99m compounds for visualization of body organs

JAMA ◽  
1965 ◽  
Vol 194 (2) ◽  
pp. 152-156 ◽  
Author(s):  
M. K. Loken
Keyword(s):  
Technetium 99M

An Alternative Method for Identifying a Failed Engine in Twin-Engine Propeller Aircraft

2020 ◽  
Vol 10 (2) ◽  
pp. 103-111
Author(s):  
Andrey K. Babin ◽  
Andrew R. Dattel ◽  
Margaret F. Klemm
Keyword(s):  
Human Error ◽  
Flight Simulator ◽  
Traditional Group ◽  
Aircraft Accidents ◽  
Alternative Method ◽  
Indicator Group ◽  
Group A ◽  
The Dead ◽  
Engine Failure ◽  
And Performance

Abstract. Twin-engine propeller aircraft accidents occur due to mechanical reasons as well as human error, such as misidentifying a failed engine. This paper proposes a visual indicator as an alternative method to the dead leg–dead engine procedure to identify a failed engine. In total, 50 pilots without a multi-engine rating were randomly assigned to a traditional (dead leg–dead engine) or an alternative (visual indicator) group. Participants performed three takeoffs in a flight simulator with a simulated engine failure after rotation. Participants in the alternative group identified the failed engine faster than the traditional group. A visual indicator may improve pilot accuracy and performance during engine-out emergencies and is recommended as a possible alternative for twin-engine propeller aircraft.

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