Abstract：
:A method has been described to optimize the cutoff frequency of the Butterworth filter for brain SPECT imaging. Since a computer simulation study has demonstrated that separation between an object signal and the random noise in projection images in a spatial-frequency domain is influenced by the total number of counts, the cutoff frequency of the Butterworth filter should be optimized for individual subjects according to total counts in a study. To reveal the relationship between the optimal cutoff frequencies and total counts in brain SPECT study, we used a normal volunteer and 99mTc hexamethyl-propyleneamine oxime (HMPAO) to obtain projection sets with different total counts. High quality images were created from a projection set with an acquisition time of 300-seconds per projection. The filter was optimized by calculating mean square errors from high quality images visually inspecting filtered reconstructed images. Dependence between total counts and optimal cutoff frequencies was clearly demonstrated in a nonogram. Using this nomogram, the optimal cutoff frequency for each study can be estimated from total counts, maximizing visual image quality. The results suggest that the cutoff frequency of Butterworth filter should be determined by referring to total counts in each study.
journal_name
Ann Nucl Medjournal_title
Annals of nuclear medicineauthors
Minoshima S,Maruno H,Yui N,Togawa T,Kinoshita F,Kubota M,Berger KL,Uchida Y,Uno K,Arimizu Ndoi
10.1007/BF03164571subject
Has Abstractpub_date
1993-05-01 00:00:00pages
71-7issue
2eissn
0914-7187issn
1864-6433journal_volume
7pub_type
杂志文章abstract：OBJECTIVE:Attenuation correction (AC) on nuclear images of non-uniform domains is generally performed by a change of the computed tomography (CT) values to μ values, which are then inserted as components into the detection probability of iterative reconstruction techniques (OS-EM Iterative AC). We established an AC tec...
journal_title：Annals of nuclear medicine
pub_type： 杂志文章
doi：10.1007/s12149-015-0972-8
更新日期：2015-06-01 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 a rare case of intravascular large B-cell lymphoma (IVLBCL) with diffuse fluorodeoxyglucose (FDG) uptake in the lung by (18)FDG-positron emission tomography/computed tomography (PET/CT). CT showed nodular shadow, whereas diffuse FDG uptake in PET/CT suggested IVLBCL in the lung. A random skin biopsy provided...
journal_title：Annals of nuclear medicine
pub_type： 杂志文章
doi：10.1007/s12149-012-0600-9
更新日期：2012-07-01 00:00:00
abstract：:We present a case of inferior vena cava (IVC) tumor thrombus detected by fluorine- 18 fluorodeoxyglucose positron emission tomography (18F-FDG-PET). A man underwent operations for the treatment of sigmoid colon cancer at the age of 63. Because tumor markers [carcinoembryonic antigen (CEA) and CA19-9] were increased at...
journal_title：Annals of nuclear medicine
pub_type： 杂志文章
doi：10.1007/s12149-007-0003-5
更新日期：2007-06-01 00:00:00
abstract：OBJECTIVE:Variable uptake of 2-deoxy-2-[18F]fluoro-D-glucose (FDG) has been noticed in positron emission tomography (PET) studies of gastric carcinoma patients, with low uptake occurring especially in some particular histological subtypes and early carcinomas. But this phenomenon has not been adequately explained. The ...
journal_title：Annals of nuclear medicine
pub_type： 杂志文章
doi：10.1007/BF02984657
更新日期：2006-11-01 00:00:00
abstract：OBJECTIVE:In clinical practice, measurement of the rCBF has mainly been conducted by I-123-N-isopropyl-p-iodoamphetamine ((123)I-IMP) SPECT using the microsphere (MS) method, with continuous arterial blood sampling. While several non-invasive (123)I-IMP quantification methods have been developed, their accuracy has bee...
journal_title：Annals of nuclear medicine
pub_type： 杂志文章
doi：10.1007/s12149-015-1053-8
更新日期：2016-04-01 00:00:00
abstract：OBJECTIVES:This study investigated the prognostic value of preoperative breast-specific gamma imaging (BSGI) uptake measured by a semi-quantitative method in invasive ductal carcinoma (IDC). METHODS:One hundred and sixty-two women with IDC who underwent preoperative BSGI were retrospectively enrolled. The tumor-to-nor...
journal_title：Annals of nuclear medicine
pub_type： 杂志文章
doi：10.1007/s12149-015-0977-3
更新日期：2015-08-01 00:00:00
abstract：:The aim of the present study was to assess the predictive value of captopril scintigraphy with the new renal agent 99mTc-ethylenedicysteine (99mTc-EC) for post-interventional improvement in blood pressure. Twelve patients who had persistently high blood pressure with previous demonstration of various degrees of renal ...
journal_title：Annals of nuclear medicine
pub_type： 杂志文章
doi：10.1007/BF03164881
更新日期：1999-04-01 00:00:00
abstract：:HIV infection results in profound alterations of immunologic function that render the patient severely immunocompromised, and susceptible to malignancies and opportunistic infections. Three AIDS-defining malignancies include Kaposi's sarcoma (KS), non-Hodgkin's lymphoma (NHL) and invasive cervical cancer. In AIDS pati...
journal_title：Annals of nuclear medicine
pub_type： 杂志文章,评审
doi：10.1007/s12149-011-0506-y
更新日期：2011-10-01 00:00:00
abstract：OBJECTIVE:The main aim of this work is to build a robust Convolutional Neural Network (CNN) algorithm that efficiently and quickly classifies bone scintigraphy images, by determining the presence or absence of prostate cancer metastasis. METHODS:CNN, widely applied in medical image classification, was used for bone sc...
journal_title：Annals of nuclear medicine
pub_type： 杂志文章
doi：10.1007/s12149-020-01510-6
更新日期：2020-11-01 00:00:00
abstract：:Portal-systemic shunting was studied in 54 portal hypertensive rats both in vivo and in vitro using radioactive microspheres. The animals underwent partial portal vein ligation around needles of varying diameter to produce a wide range of shunting. Two to four weeks later, quantitative lung-liver scintigraphic and who...
journal_title：Annals of nuclear medicine
pub_type： 杂志文章
doi：10.1007/BF03164656
更新日期：1992-11-01 00:00:00
abstract：OBJECTIVE:The aim of this study was to measure the apparent diffusion coefficient (ADC) value at the region with the highest FDG uptake using sequential (18)F-FDG PET and MRI, and to correlate it with the histological grade of invasive ductal carcinoma (IDC) of the breast. METHODS:A retrospective study was conducted o...
journal_title：Annals of nuclear medicine
pub_type： 杂志文章
doi：10.1007/s12149-013-0737-1
更新日期：2013-10-01 00:00:00
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journal_title：Annals of nuclear medicine
pub_type： 杂志文章
doi：10.1007/BF03178307
更新日期：1992-08-01 00:00:00
abstract：OBJECTIVE:The aim of this study was to evaluate the value of breast-specific gamma imaging (BSGI) as compared with mammography (MMG) and ultrasonography (US). METHODS:This study retrospectively enrolled 121 women with breast cancer (45.0 ± 8.1 years) and dense breasts (breast density >50 %). All patients underwent pre...
journal_title：Annals of nuclear medicine
pub_type： 杂志文章
doi：10.1007/s12149-012-0649-5
更新日期：2012-12-01 00:00:00
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journal_title：Annals of nuclear medicine
pub_type： 杂志文章
doi：10.1007/s12149-018-1286-4
更新日期：2018-12-01 00:00:00
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journal_title：Annals of nuclear medicine
pub_type： 临床试验,杂志文章
doi：10.1007/BF02984603
更新日期：2005-05-01 00:00:00
abstract：OBJECTIVE:To clarify the difference of (18)F-FDG uptake kinetics between FDG-avid metastatic lymph nodes (LNs) in patients with non-small-cell lung cancer (NSCLC) and FDG-avid benign LNs associated with various etiologies on dual-time point PET/CT scan, and to determine the optimal parameter for differentiation. METHO...
journal_title：Annals of nuclear medicine
pub_type： 杂志文章
doi：10.1007/s12149-009-0268-y
更新日期：2009-08-01 00:00:00
abstract：:This case report illustrates the dynamic and static renal scintigraphic images of a patient with an unusual large diverticulum of the renal pelvis. The initial diagnosis by intravenous pyelography (IVP) and ultrasonographic (US) examination was a renal pelvic diverticulum of the left kidney, and the patient was referr...
journal_title：Annals of nuclear medicine
pub_type： 杂志文章
doi：10.1007/BF02985963
更新日期：2004-12-01 00:00:00
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pub_type： 杂志文章
doi：10.1007/s12149-020-01542-y
更新日期：2021-01-01 00:00:00
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journal_title：Annals of nuclear medicine
pub_type： 杂志文章
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更新日期：2010-10-01 00:00:00
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journal_title：Annals of nuclear medicine
pub_type： 杂志文章,评审
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更新日期：2020-05-01 00:00:00
abstract：OBJECTIVE:In this study, the feasibility and kinetic characteristics of the (68)Ga-NOTA-RGD, a recently developed RGD peptide agent, were investigated for atherosclerosis imaging in comparison with (18)FDG. METHODS:ApoE(-/-) mice were fed a high-fat diet for more than 20 weeks. To evaluate the feasibility, tissue upta...
journal_title：Annals of nuclear medicine
pub_type： 杂志文章
doi：10.1007/s12149-013-0757-x
更新日期：2013-11-01 00:00:00
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journal_title：Annals of nuclear medicine
pub_type： 杂志文章
doi：10.1007/BF02985123
更新日期：2005-12-01 00:00:00
abstract：PURPOSE:The aim of this study is to specify the precise role of bone scintigraphy and serum CEA and CA 15-3 assays in the monitoring of breast cancers in order to optimize their use and to determine whether it is possible to guide the prescription of bone scan by the use of CEA and CA 15-3 assays in the monitoring of b...
journal_title：Annals of nuclear medicine
pub_type： 杂志文章
doi：10.1007/BF02984567
更新日期：2004-09-01 00:00:00
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journal_title：Annals of nuclear medicine
pub_type： 杂志文章
doi：10.1007/BF02987833
更新日期：2001-06-01 00:00:00
abstract：:A 62-year-old man with a soft, non-tender, movable mass 2.5 x 2.5-cm in diameter in the volar surface of the right index finger over the proximal phalanx underwent Tc-99m RBC perfusion and blood-pool scintigraphy to evaluate the vascular nature and extent of the mass. Highly increased activity on early and delayed blo...
journal_title：Annals of nuclear medicine
pub_type： 杂志文章
doi：10.1007/BF03000110
更新日期：2002-06-01 00:00:00
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pub_type： 杂志文章
doi：10.1007/s12149-008-0166-8
更新日期：2008-08-01 00:00:00
abstract：OBJECTIVE:One of the major causes of diabetes and obesity is abnormality in glucose metabolism and glucose uptake in the muscle and adipose tissue based on an insufficient action of insulin. Therefore, many of the drug discovery programs are based on the concept of stimulating glucose uptake in these tissues. Improveme...
journal_title：Annals of nuclear medicine
pub_type： 杂志文章
doi：10.1007/s12149-017-1169-0
更新日期：2017-06-01 00:00:00
abstract：AIM:To assess the predictive and prognostic value of textural parameters in locally advanced breast cancer (LABC) obtained by 18F-FDG PET/CT. METHODS:Prospective study including 68 patients with LABC, neoadjuvant chemotherapy (NC) indication and a baseline 18F-FDG PET/CT. Breast specimens were grouped into molecular p...
journal_title：Annals of nuclear medicine
pub_type： 杂志文章
doi：10.1007/s12149-018-1253-0
更新日期：2018-07-01 00:00:00
abstract：OBJECTIVE:This study aimed to determine changes in FDG-PET/CT after pleurodesis with OK-432 and to investigate differences in the changes between non-malignant and malignant lesions. METHODS:Study participants were 17 patients with a history of malignant chest disease who underwent FDG-PET/CT after pleurodesis using O...
journal_title：Annals of nuclear medicine
pub_type： 杂志文章
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更新日期：2020-10-01 00:00:00
