Abstract:
:To design a mathematical model for quantifying cerebral blood flow using 99mTc-hexamethyl-propyleneamine oxime (HM-PAO), basic studies were performed in animals and human volunteers. Microautoradiography revealed that HM-PAO crossed the blood-brain barrier. Thin layer chromatographic studies demonstrated the rapid disappearance of free HM-PAO in the brain tissue. Back diffusion from brain to blood was found negligible. From these observations, the familiar microsphere model was employed in the measurements of blood flow with HM-PAO. This, however, resulted in much lower flow values than simultaneously obtained values with the labeled microspheres. This underestimation was ascribed to the high affinity of HM-PAO to blood cells and serum protein. Taking the binding of HM-PAO to blood components into consideration, the following model equation was designed for quantifying cerebral blood flow: Ce(t) = Ca(t)-kCa(t)*exp(-kt), Cb(T) = F integral of T0 Ce(t)dt, where Ce and Ca are the free HM-PAO concentration in the intravascular space and the arterial whole-blood concentration of HM-PAO, respectively, as a function of time (t), Cb is the brain activity concentration, k is the rate constant for the binding of HM-PAO to the blood components, F is the blood flow value, T is time of measurement, and * denotes the operation of convolution. In clinical studies, Ca(t) and Cb(T) are obtainable from a dynamic single photon emission computerized tomographic study of the brain and multiple arterial blood sampling, respectively. The values for F and k can be estimated using a nonlinear least squares fitting method.
journal_name
Ann Nucl Medjournal_title
Annals of nuclear medicineauthors
Matsuda H,Oba H,Terada H,Tsuji S,Sumiya H,Shiba K,Seki H,Imai K,Mori H,Hisada Kdoi
10.1007/BF03164581subject
Has Abstractpub_date
1988-05-01 00:00:00pages
13-9issue
1eissn
0914-7187issn
1864-6433journal_volume
2pub_type
杂志文章abstract::Reinjection images were obtained in 23 patients with myocardial infarction by the additional injection of 37 MBq of thallium-201 after obtaining 4 hour delayed images on exercise thallium-201 SPECT (TSPECT). A redistribution index (RI) was derived of the changes in perfusion defects between immediate and 4 hour delaye...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章
doi:10.1007/BF03164630
更新日期:1991-11-01 00:00:00
abstract::We report a patient with DTPA and DMSA uptake on unsuspected bone metastases. He had severe pain due to grade 3 hydronephrosis of his left kidney. When Tc-99m DTPA and DMSA renal scanning were performed for preoperative evaluation, abnormal radiopharmaceutical uptake on the iliac area was noted. Pancreatic adenocarcin...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章
doi:10.1007/BF02987249
更新日期:2006-06-01 00:00:00
abstract:OBJECTIVE:To reduce variance of the total volume of distribution (V (T)) image, we improved likelihood estimation in graphical analysis (LEGA) for dynamic positron emission tomography (PET) images using maximum a posteriori (MAP). METHODS:In our proposed MAP estimation in graphical analysis (MEGA), a set of time-activ...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章
doi:10.1007/s12149-008-0226-0
更新日期:2009-02-01 00:00:00
abstract:OBJECTIVE:To demonstrate the effect of clinicopathological factors on 68Ga-PSMA-11 PET/CT positivity at the time of biochemical recurrence (BCR) of localized prostate cancer (PCa) following definitive therapy. METHODS:We retrospectively reviewed our institutional database for PCa patients who had BCR and subsequently ...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章
doi:10.1007/s12149-019-01340-1
更新日期:2019-05-01 00:00:00
abstract:OBJECTIVE:Two methods of quantitating cerebral blood flow (CBF) with iodine-123-labeled N-isopropyl-p-iodoamphetamine (I-123 IMP) and a two-compartment model had been proposed; one is the table look-up (TLU) method and the other is the autoradiographic (ARG) method. The TLU method provides values of the cerebral blood ...
journal_title:Annals of nuclear medicine
pub_type: 临床试验,杂志文章
doi:10.1007/BF02988615
更新日期:2002-07-01 00:00:00
abstract::We report the first clinical PET study using [1-methyl-11C]8-dicyclopropylmethyl-1-methyl-3-propylxanthine ([11C]MPDX) for imaging adenosine A1 receptors in the human brain. The binding of [11C]MPDX evaluated quantitatively as the distribution volume by a graphical analysis was high in the striatum and thalamus, and l...
journal_title:Annals of nuclear medicine
pub_type: 临床试验,杂志文章
doi:10.1007/BF03006445
更新日期:2003-09-01 00:00:00
abstract:OBJECTIVE:Accurate and validated methods for estimating regional PET image noise are helpful for optimizing image processing. The bootstrap is a data-based simulation method for statistical inference, which can be used to estimate the PET image noise without repeated measurements. The aim of this study was to experimen...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章
doi:10.1007/s12149-013-0782-9
更新日期:2014-02-01 00:00:00
abstract::Whole body imaging with radioiodine can detect functioning metastases, which can often be effectively treated with appropriate amounts of radioiodine. Non-physiologic I-131 uptake detected on images is usually interpreted as suggesting functioning thyroid metastases. However, extra-thyroidal I-131 accumulation does no...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章
doi:10.1007/BF02985010
更新日期:2004-05-01 00:00:00
abstract:PURPOSE:Several studies have reported significant renal toxicity after the use of a high dose of 90Y-DOTATOC. Thus, renal protection is necessary in treatments with 90Y-DOTA Tyr3-octreotide (DOTATOC). The infusion of certain positively charged amino acids has been shown to effectively reduce renal uptake of DOTATOC. In...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章
doi:10.1007/BF03034003
更新日期:2007-01-01 00:00:00
abstract::Bacterial orbital cellulitis is an infection of the soft tissues behind the orbital septum. Cellulitis is seen as a poorly defined area of increased CT density or T2 signal intensity within the fat. There is an amorphous enhancement following contrast infusion. Radiolabeled leukocytes or granulocytes are now establish...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章
doi:10.1007/BF03012129
更新日期:2001-02-01 00:00:00
abstract:AIM:To investigate the diagnostic performance of early acquisition compared to late imaging for the detection of local recurrence of prostate cancer by means of ¹⁸F-FCH PET/CT. MATERIALS AND METHODS:99 patients with radical prostatectomy (mean PSA 3.9 ± 5.03) were subjected to early dynamic PET/CT acquisition of the p...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章
doi:10.1007/s12149-015-1015-1
更新日期:2015-12-01 00:00:00
abstract::Metastatic calcification is often detected by bone scintigraphy. We recently saw metastatic calcification in the stomach and kidneys of a patient on continuous ambulatory peritoneal dialysis. Tc-99m HMDP accumulation into both organs was noted even in the first frame of dynamic data acquisition of 4 min/frame, suggest...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章
doi:10.1007/BF03164806
更新日期:1996-11-01 00:00:00
abstract:OBJECTIVE:Enhanced washout of 99mTc-tetrofosmin (TF) has been reported in patients with hypertrophic cardiomyopathy (HCM). Here, using quantitative dual-autoradiography, the relationship between TF retention abnormality and metabolism depicted by 125I-BMIPP uptake was investigated quantitatively in a hamster model of c...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章
doi:10.1007/BF02985000
更新日期:2004-05-01 00:00:00
abstract:OBJECTIVE:One mechanism that may be responsible for drug resistance in epilepsy is the upregulation of P-glycoprotein (P-gp), a drug efflux pump, at the epileptogenic focus. In this study, we sought to evaluate the potential of a recently developed P-gp PET radiotracer, [(11)C]N-desmethyl-loperamide ([(11)C]dLop), for ...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章
doi:10.1007/s12149-013-0725-5
更新日期:2013-08-01 00:00:00
abstract::DTPA clearance rate is a reliable index of alveolar epithelial permeability, and is a highly sensitive marker of pulmonary epithelial damage, even of mild degree. In this study, 99mTc-DTPA aerosol inhalation scintigraphy was used to assesss the pulmonary epithelial membrane permeability and to investigate the possible...
journal_title:Annals of nuclear medicine
pub_type: 临床试验,杂志文章
doi:10.1007/BF02984578
更新日期:2004-10-01 00:00:00
abstract:BACKGROUND:The liver itself regenerates after hepatectomy but little is known about how much hepatic function recovers during the regeneration. The liver uptake value (LUV), calculated from Tc-99m-labeled galactosyl-human-serum-albumin ((99m)Tc-GSA) SPECT/CT fused images, is reliable and useful for evaluating hepatic f...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章
doi:10.1007/s12149-014-0872-3
更新日期:2014-10-01 00:00:00
abstract::The increasing life expectancy in our society results in a continuously growing number of patients suffering from neurodegenerative disorders, particularly Alzheimer's disease (AD). Apart from the deleterious consequences for patients and their relatives, this issue has also alarming effects on our social systems. The...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章,评审
doi:10.1007/s12149-009-0330-9
更新日期:2010-02-01 00:00:00
abstract:OBJECTIVE:Because of the urinary excretion of fluorine-18 fluorodeoxyglucose ((18)F-FDG), FDG-PET or PET/CT is thought of little value in patients with bladder cancer. The purpose of our study was to investigate the value of (18)F-FDG PET/CT with additional pelvic images in detection of recurrent bladder cancers. METH...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章
doi:10.1007/s12149-012-0614-3
更新日期:2012-08-01 00:00:00
abstract::Currently, imaging techniques are the leading methods used to diagnose of metastasis to bone. However, these techniques are expensive, expose patients to toxic and radioactive compounds, and monitor response to treatment poorly; these drawbacks have prompted the search for alternative screening methods. Therefore, bon...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章,评审
doi:10.1007/BF02996296
更新日期:2002-05-01 00:00:00
abstract:PURPOSE:The purpose of this study was to evaluate whether the degree of technetium-99m methoxyisobutylisonitrile (MIBI) uptake and its retention in delayed imaging in small cell lung cancer (SCLC) was correlated with the response to multiagent chemotherapy and to investigate if there was a relationship between the surv...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章
doi:10.1007/BF02984643
更新日期:2006-05-01 00:00:00
abstract:OBJECTIVE:To investigate the potential role of Tc-99m depreotide (Tc-DEPR) in the preoperative lymph node (N) staging of non-small-cell lung cancer (NSCLC). METHODS:Sixty-one patients with NSCLC at the potentially operable stage were enrolled and underwent scintigraphy before surgery (n=56) or mediastinoscopy (n=5). I...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章
doi:10.1007/s12149-014-0839-4
更新日期:2014-06-01 00:00:00
abstract::We report scan findings of Tl-201 in a case of histologically proved Warthin's tumor. Dual isotopes acquisition was performed in a case of left parotid Warthin's tumor. Both early and delayed Tc-99m-pertechnetate (Tc-99m) images showed increased uptake at the tumor. Tl-201 scan also showed an increase of uptake on the...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章
doi:10.1007/BF03164741
更新日期:1996-08-01 00:00:00
abstract:OBJECTIVES:Advances in radiopharmaceuticals and clinical understanding have escalated the use of intraoperative gamma probes in surgery. However, most probes on the market are non-imaging gamma probes that suffer from the lack of ancillary information of the surveyed tissue area. We have developed a novel, hand-held di...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章
doi:10.1007/s12149-012-0672-6
更新日期:2013-04-01 00:00:00
abstract:AIM:18F-Choline (FCH) uptake parameters are strong indicators of aggressive disease in prostate cancer. Functional parameters derived by magnetic resonance imaging (MRI) are also correlated to aggressive disease. The aim of this work was to evaluate the relationship between metabolic parameters derived by FCH PET/CT an...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章
doi:10.1007/s12149-018-1302-8
更新日期:2019-01-01 00:00:00
abstract::Iodine-131 metaiodobenzylguanidine ((131)I-MIBG) therapy is an effective treatment for patients with malignant paraganglioma for which surgical resection is not indicated. We performed high-dose (131)I-MIBG therapy on two patients with malignant paraganglioma and multiple bone metastases. The bone metastases were diag...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章
doi:10.1007/s12149-007-0020-4
更新日期:2007-07-01 00:00:00
abstract::Metastatic tumors or secondary lymphoma of the kidney are rare and can often be missed on conventional computed tomography (CT) imaging. On the other hand, many types of metastatic tumor or lymphoma can be detected clearly as hotspots of elevated uptake on FDG PET. However, excreted FDG present in the urinary tract mi...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章,评审
doi:10.1007/BF02985596
更新日期:2006-01-01 00:00:00
abstract::Identification and treatment of hibernating myocardium (HM) lead to improvement in LV function and prognosis in patients with post-ischemic heart failure. Different techniques are used to diagnose HM: echocardiography, MRI, SPECT and PET and, in patients with moderate LV impairment, their predictive values are similar...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章,评审
doi:10.1007/BF03006599
更新日期:2003-07-01 00:00:00
abstract:OBJECTIVE:Radium-223 (223Ra) has been approved for treatment in patients with metastatic castration-resistant prostatic cancer (mCRPC) and bone metastasis. This α-emitting radionuclide has a beneficial effect on pain and is also capable to increase overall survival (OS). Several studies evaluated the prognostic value o...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章
doi:10.1007/s12149-020-01501-7
更新日期:2020-10-01 00:00:00
abstract::67Ga-citrate and 99mTc(V)-DMSA images were obtained in a patient with recurrent extraabdominal fibromatosis of the left calf. The 67Ga-citrate image showed abnormal uptake in the left calf lesion and right calf, which was considered due to probable myositis caused by overexertion. On the other hand, the 99mTc(V)-DMSA ...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章
doi:10.1007/BF03164850
更新日期:1998-08-01 00:00:00
abstract::In a 43-year-old woman with fibrous dysplasia of the ribs and facial bone and in a 40-year-old man with fibrous dysplasia of the facial bone, there were considerable increases in the uptake of Tc-99m methylenediphosphonate (Tc-99m MDP) and Gallium-67 citrate. Fibrous dysplasia should be added to differential diagnosis...
journal_title:Annals of nuclear medicine
pub_type: 杂志文章
doi:10.1007/BF03165658
更新日期:1990-03-01 00:00:00