原始MRI数据压缩包解析与文件列表

需积分: 5 0 下载量 166 浏览量 更新于2025-01-02 收藏 10.78MB ZIP 举报
资源摘要信息: "subject1_raw_mri.zip" 该资源标题和描述提供的信息较少,标题为"subject1_raw_mri.zip",仅告诉我们这是一个关于MRI(磁共振成像)的原始数据压缩包文件。没有给出具体的描述和标签信息,但是通过压缩包的文件名称列表,我们可以推测一些关于这些数据的知识点。 文件名称列表中的文件扩展名".dcm"表示这些文件是DICOM(数字成像和通信医学)格式的。DICOM是医疗成像设备(如MRI、CT扫描仪、X射线、超声设备等)生成和处理图像的标准格式。它允许跨多个制造商和设备共享医学图像及相关信息。 从文件名称列表中可以看出,这是由00102至00127编号的一系列医学图像文件。这些编号通常对应于成像过程中的不同序列或时间点,用于记录某一特定受试者在MRI扫描过程中的连续图像。 以下是一些关于MRI和DICOM格式的重要知识点: 1. MRI的工作原理: MRI是一种利用强磁场和无线电波来产生身体内部结构详细图像的技术。它不使用X射线,因此对患者来说是一种相对安全的成像技术。MRI可以提供软组织的高对比度图像,尤其擅长于脑部、关节、脊髓等部位的成像。 2. MRI图像的获取: MRI扫描过程中,患者被置于一个强大的磁场中,体内的氢原子核(主要是水中的氢原子)会排列成一定的方向。通过无线电波脉冲激发这些氢原子核,当停止脉冲后,氢原子核回到原来的排列状态时会释放能量,这个能量以无线电波的形式被接收器检测到并转化为图像数据。 3. DICOM格式的作用: DICOM格式允许医学图像及其相关信息以统一的标准存储和传输。它不仅包含了图像数据,还包括了患者信息、成像参数、设备信息和图像的其他元数据。使用DICOM格式可以确保不同医疗设备之间可以无缝交换和处理医学图像。 4. DICOM文件结构: DICOM文件通常由两部分组成:数据集和文件元数据。数据集包含了图像的数据,如像素值,而文件元数据则包含了描述性信息,如患者姓名、年龄、性别、成像日期、成像设备参数等。 5. 数据集压缩的必要性: 在存储和传输大量MRI图像数据时,数据压缩非常关键。原始的MRI数据体积通常非常大,压缩可以显著减少所需的存储空间并加快网络传输速度。常见的压缩方法包括无损压缩和有损压缩,无损压缩不会丢失任何图像信息,而有损压缩可能会牺牲一些图像质量以获得更高的压缩率。 6. 在研究和诊断中的应用: 原始的MRI数据对于医学研究和精确诊断至关重要。它们可以用于开发新的成像技术、验证算法模型、进行深度学习分析以及帮助医生更精确地诊断疾病。 由于缺乏具体的描述信息,以上知识点是基于文件名称列表和通用知识推断的。在实际应用中,对这些MRI图像数据的进一步分析和处理将需要专业的医学影像软件和相应的医学背景知识。

将下面这条sql语句简化一下:SELECT * FROM ( SELECT fpd.fpd_id AS fpdId, fpd.fpd_budget_project AS fpdBudgetProject, fpd.fpd_budget_project_id AS fpdBudgetProjectId, fpd.fpd_pf_name AS fpdPfName, fpd.fpd_pf_id AS fpdPfId, fpd.fpd_expend_subject AS fpdExpendSubject, fpd.fpd_expend_subject_id AS fpdExpendSubjectId, fpd.fpd_payee_name AS fpdPayeeName, fpd.fpd_payee_account AS fpdPayeeAccount, fpd.fpd_payee_opening_bank AS fpdPayeeOpeningBank, fpd.fpd_payee_opening_bank_num AS fpdPayeeOpeningBankNum, fpd.fpd_dept_pay_economics_classify_num AS fpdDeptPayEconomicsClassifyNum, fpd.fpd_dept_pay_economics_classify_name AS fpdDeptPayEconomicsClassifyName, fpd.fpd_applied_amount AS fpdAppliedAmount, fpd.fpd_capital_use AS fpdCapitalUse, fpd.fpd_postscript AS fpdPostscript, fpd.fpd_budget_item_name AS fpdBudgetItemName, fpd.fpd_budget_item_number AS fpdBudgetItemNumber, fpd.fpd_dr_name AS fpdDrName, dbec.dbec_parent_num AS dbecParentNum FROM financial_payment_details fpd LEFT JOIN dept_budget_economy_class dbec ON fpd.fpd_dept_pay_economics_classify_num = dbec.dbec_num WHERE fpd.fpd_is_tax = "0" UNION ALL SELECT fpd.fpd_id AS fpdId, fpd.fpd_budget_project AS fpdBudgetProject, fpd.fpd_budget_project_id AS fpdBudgetProjectId, fpd.fpd_pf_name AS fpdPfName, fpd.fpd_pf_id AS fpdPfId, fpd.fpd_expend_subject AS fpdExpendSubject, fpd.fpd_expend_subject_id AS fpdExpendSubjectId, fpd.fpd_payee_name AS fpdPayeeName, fpd.fpd_payee_account AS fpdPayeeAccount, fpd.fpd_payee_opening_bank AS fpdPayeeOpeningBank, fpd.fpd_payee_opening_bank_num AS fpdPayeeOpeningBankNum, fpd.fpd_dept_pay_economics_classify_num AS fpdDeptPayEconomicsClassifyNum, fpd.fpd_dept_pay_economics_classify_name AS fpdDeptPayEconomicsClassifyName, sum( fpd.fpd_applied_amount ) AS fpdAppliedAmount, fpd.fpd_capital_use AS fpdCapitalUse, fpd.fpd_postscript AS fpdPostscript, fpd.fpd_budget_item_name AS fpdBudgetItemName, fpd.fpd_budget_item_number AS fpdBudgetItemNumber, fpd.fpd_dr_name AS fpdDrName, dbec.dbec_parent_num AS dbecParentNum FROM financial_payment_details fpd LEFT JOIN dept_budget_economy_class dbec ON fpd.fpd_dept_pay_economics_classify_num = dbec.dbec_num WHERE fpd.fpd_is_tax = "1" GROUP BY fpd_pay_num ) t1

192 浏览量

将下面这条sql语句简短一些:SELECT * FROM ( SELECT fpd.fpd_id AS fpdId, fpd.fpd_budget_project AS fpdBudgetProject, fpd.fpd_budget_project_id AS fpdBudgetProjectId, fpd.fpd_pf_name AS fpdPfName, fpd.fpd_pf_id AS fpdPfId, fpd.fpd_expend_subject AS fpdExpendSubject, fpd.fpd_expend_subject_id AS fpdExpendSubjectId, fpd.fpd_payee_name AS fpdPayeeName, fpd.fpd_payee_account AS fpdPayeeAccount, fpd.fpd_payee_opening_bank AS fpdPayeeOpeningBank, fpd.fpd_payee_opening_bank_num AS fpdPayeeOpeningBankNum, fpd.fpd_dept_pay_economics_classify_num AS fpdDeptPayEconomicsClassifyNum, fpd.fpd_dept_pay_economics_classify_name AS fpdDeptPayEconomicsClassifyName, fpd.fpd_applied_amount AS fpdAppliedAmount, fpd.fpd_capital_use AS fpdCapitalUse, fpd.fpd_postscript AS fpdPostscript, fpd.fpd_budget_item_name AS fpdBudgetItemName, fpd.fpd_budget_item_number AS fpdBudgetItemNumber, fpd.fpd_dr_name AS fpdDrName, dbec.dbec_parent_num AS dbecParentNum FROM financial_payment_details fpd LEFT JOIN dept_budget_economy_class dbec ON fpd.fpd_dept_pay_economics_classify_num = dbec.dbec_num WHERE fpd.fpd_is_tax = "0" UNION ALL SELECT fpd.fpd_id AS fpdId, fpd.fpd_budget_project AS fpdBudgetProject, fpd.fpd_budget_project_id AS fpdBudgetProjectId, fpd.fpd_pf_name AS fpdPfName, fpd.fpd_pf_id AS fpdPfId, fpd.fpd_expend_subject AS fpdExpendSubject, fpd.fpd_expend_subject_id AS fpdExpendSubjectId, fpd.fpd_payee_name AS fpdPayeeName, fpd.fpd_payee_account AS fpdPayeeAccount, fpd.fpd_payee_opening_bank AS fpdPayeeOpeningBank, fpd.fpd_payee_opening_bank_num AS fpdPayeeOpeningBankNum, fpd.fpd_dept_pay_economics_classify_num AS fpdDeptPayEconomicsClassifyNum, fpd.fpd_dept_pay_economics_classify_name AS fpdDeptPayEconomicsClassifyName, sum( fpd.fpd_applied_amount ) AS fpdAppliedAmount, fpd.fpd_capital_use AS fpdCapitalUse, fpd.fpd_postscript AS fpdPostscript, fpd.fpd_budget_item_name AS fpdBudgetItemName, fpd.fpd_budget_item_number AS fpdBudgetItemNumber, fpd.fpd_dr_name AS fpdDrName, dbec.dbec_parent_num AS dbecParentNum FROM financial_payment_details fpd LEFT JOIN dept_budget_economy_class dbec ON fpd.fpd_dept_pay_economics_classify_num = dbec.dbec_num WHERE fpd.fpd_is_tax = "1" GROUP BY fpd_pay_num ) t1

110 浏览量