A case of photomultiplier tube defect observed in gamma camera DMSA scintigraphy: The importance of regular quality controls

Abstract. Red has been reported to enhance attraction for women rating men ( Elliot et al., 2010 ) and men rating women ( Elliot & Niesta, 2008 ). We replicated one of these studies online and in-person. To ensure rigor, we obtained original materials, planned for informative sample sizes, pre-registered our study, used a positive control, and adopted quality controls. For men, we found a very weak effect in the predicted direction (d = 0.09, 95% CI [−0.17, 0.34], N = 242). For women, we found a very weak effect in the opposite direction (d = −0.09, 95% CI [−0.30, 0.12], N = 360). The original studies may have overestimated the red effect, our studies may be an underestimate, or there could be strong moderation of the effect of red on attraction.

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Quantitative measurement of cerebral metabolic rate of glucose by means of dual-head coincidence gamma camera and 2-deoxy-2- [18F] fluoro-D-glucose

Journal of Cerebral Blood Flow & Metabolism ◽

10.1038/sj.jcbfm.9591524.0670 ◽

2005 ◽

Vol 25 (1_suppl) ◽

pp. S670-S670

Author(s):

Katsufumi Kajimoto ◽

Naohiko Oku ◽

Yasuyuki Kimura ◽

Makiko Tanaka ◽

Hiroki Kato ◽

...

Keyword(s):

Metabolic Rate ◽

Gamma Camera ◽

Quantitative Measurement ◽

Cerebral Metabolic Rate

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51Cr-Bleomycin, a New Oncophilic Radiopharmaceutical II. Scintigraphic Diagnosis of Malignant Neoplasms

Nuklearmedizin ◽

10.1055/s-0037-1620555 ◽

1982 ◽

Vol 21 (02) ◽

pp. 68-71 ◽

Cited By ~ 1

Author(s):

D. Brykalski ◽

T. Pertyński ◽

Maria Rembelska ◽

K. Durski ◽

S. Fajndt ◽

...

Keyword(s):

Gamma Camera ◽

Malignant Neoplasms ◽

Cervix Carcinoma ◽

Malignant Lymphomas ◽

Hodgkins Lymphoma ◽

67Ga Citrate

51Cr-bleomycin was used for the scintigraphic detection of tumours and the assessment of the spread of the disease in 20 patients with various malignances: 7 with Hodgkins Lymphoma, 5 with other malignant lymphomas, 4 cases of cervix carcinoma and 4 other tumours. The scintigraphy was performed using a Toshiba GC 401 gamma camera coupled to an MDSI computer Trinary. Active foci were scored using a semiquantitative scale of 0 to 5. Results of these studies were compared with those of tests similarly carried out with 57Co-bleomycin (in 9 of the cases) and 67Ga-citrate (11 cases); they demonstrated that the properties of 51Cr-bleomycin for scintigraphic detection of neoplastic foci are similar to those of 57Co-bleomycin.

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Comparative Chemical, Biological and Clinical Studies of 99mTc-Glucoheptonate and 99mTc-Dimercaptosucci- nate as Used in Renal Scintigraphy

Nuklearmedizin ◽

10.1055/s-0037-1620873 ◽

1979 ◽

Vol 18 (01) ◽

pp. 40-45 ◽

Cited By ~ 1

Author(s):

M. Malešević ◽

Lj. Stefanović ◽

N. Vanlić-Razumenić

Keyword(s):

Clinical Studies ◽

Gamma Camera ◽

Radiochemical Purity ◽

Renal Cortex ◽

Renal Scintigraphy ◽

Time Intervals ◽

Experimental Animals ◽

Dynamic Studies

The renal radiopharmaceutical preparations 99mTc-DMS and 99mTc-GH were examined chemically, biologically and clinically. Both preparations are of high radiochemical purity. The biodistribution of both preparations was examined in experimental animals at different time intervals, from 15 min to 4 hr; the percentage of incorporation of 99mTc-DMS into kidneys is much higher (29.4% to 52.0%) than that of 99mTc-GH (12.80% to 22.20%). Both preparations accumulate to a greater extent in the renal cortex than in the medulla.The most suitable time for renal scintigraphy for "mTc-DMS is 90-150 min while for 99mTc-GH it is 60-90 min. It is concluded that 99mTc-DMS is more suitable for static scintigrams on the scanner and 99mTc-GH for dynamic studies with the gamma camera.

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Quantitative Radioisotope Measurement of Duodenogastric Reflux in Patients with Ulcer or Gastrectomized for Ulcer

Nuklearmedizin ◽

10.1055/s-0038-1624287 ◽

1985 ◽

Vol 24 (03) ◽

pp. 107-110

Author(s):

M. Pääkkönen ◽

S. Aukee ◽

K. Korhonen ◽

A. Pääkkönen ◽

E. Länsimies ◽

...

Keyword(s):

Gamma Camera ◽

Background Activity ◽

Bile Reflux ◽

Duodenogastric Reflux ◽

Upper Limit ◽

Visual Evidence ◽

Biochemical Measurement

SummaryIn this work the duodenogastric reflux was quantified as the amount of radioactivity entering the stomach after an i.v. administration of 99mmTc-HIDA in ulcer patients and in patients who had undergone BI gastrectomy. The results were compared with visual evidence of gastric activity in the gamma camera images and biochemical determination of gastric bile reflux. The method is useful in quantifying the reflux if the activity is above the background activity. It allows the determination of an upper limit for the reflux when the reflux is evident visually. Only two or three images are needed for the quantitation. No correlation was found between biochemical measurement of fasting bile reflux in the stomach and radioisotopic quantification.

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On the Determination of the Resolution Index of a Gamma Camera

Nuklearmedizin ◽

10.1055/s-0038-1624837 ◽

1973 ◽

Vol 12 (04) ◽

pp. 360-366

Author(s):

Barbara Gwiazdowska ◽

H. Mackiewicz ◽

J. Tolwinski

Keyword(s):

Gamma Camera

L’étude tâche d’interpréter les différences des indices de résolution de gamma caméra obtenues expérimentalement et calculées. Les erreurs de mesurage et les conditions de validité des formules utilisées dans les calcules sont discutées. On a pu obtenir un agréement des deux méthodes et une confirmation théorique. On suggert de déterminer quelque condition de mesurage ou de remplacer les méthodes de mesurage par de calcul.

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Dosimetry with 188Re-labelled monoclonal anti-CD66 antibodies

Nuklearmedizin ◽

10.1055/s-0038-1625927 ◽

2006 ◽

Vol 45 (03) ◽

pp. 134-138 ◽

Cited By ~ 6

Author(s):

T. Kull ◽

N. M. Blumstein ◽

D. Bunjes ◽

B. Neumaier ◽

A. K. Buck ◽

...

Keyword(s):

Monoclonal Antibody ◽

Bone Marrow ◽

Gamma Camera ◽

Absorbed Dose ◽

Correlation Coefficients ◽

Residence Times ◽

Reliable Prediction ◽

Red Bone Marrow ◽

Antibody Preparation ◽

Simplified Method

SummaryAim: For the therapeutic application of radiopharmaceuticals the activity is determined on an individual basis. Here we investigated the accuracy for a simplified assessment of the residence times for a 188Re-labelled anti-CD66 monoclonal antibody. Patients, methods: For 49 patients with high risk leukaemia (24 men, 25 women, age: 44 ± 12 years) the residence times were determined for the injected 188Re-labelled anti-CD66 antibodies (1.3 ± 0.4 GBq, 5–7 GBq/mg protein, >95% 188Re bound to the antibody) based on 5 measurements (1.5, 3, 20, 26, and 44 h p.i.) using planar conjugate view gamma camera images (complete method). In a simplified method the residence times were calculated based on a single measurement 3 h p.i. Results: The residence times for kidneys, liver, red bone marrow, spleen and remainder of body for the complete method were 0.4 ± 0.2 h, 1.9 ± 0.8 h, 7.8 ± 2.1 h, 0.6 ± 0.3 h and 8.6 ± 2.1 h, respectively. For all organs a linear correlation exists between the residence times of the complete method and the simplified method with the slopes (correlation coefficients R > 0.89) of 0.89, 0.99, 1.23, 1.13 and 1.09 for kidneys, liver, red bone marrow, spleen and remainder of body, respectively. Conclusion: The proposed approach allows reliable prediction of biokinetics of 188Re-labelled anti-CD66 monoclonal antibody biodistribution with a single study. Efficient pretherapeutic estimation of organ absorbed dose may be possible, provided that a more stable anti-CD66 antibody preparation is available.

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